• Brodhead Steel Products Co.

• Bucci Plumbing, Inc.

• D. S. Brown Co.

• Harris Specialty Chemicals

• Hettich America L.P.

• Hilman Rollers

• Kelly Klosure Systems

• LandArt Design, Inc.

• Lee Controls

• Mason Industries, Inc.

• Piping Technology & Products

• Quickway Metal Fabricators

• Tobin + Parnes Design Enterprises

• Watson-Bowman Acme Corp.

• Whaleyco